Public transport and transit providers have been trapped in walled gardens of data and technology. In short they are held captive by the very vendors who build their systems for them, but rely on closed and proprietary standards & architectures, rather than open and flexible ones.
These monopolistic practices stifle competition and innovation, both by preventing new entrants from easily integrating their solutions and by stopping data being portable from one system to another.
Transit agencies and public transport providers can now avoid this vendor lock-in by insisting their systems are interoperable and built upon open standards. By making sure that any retail, ticketing and customer account products now use technology based upon Open APIs, they can make their systems more future-proof and eventually able to be part of a wider transport and mobility ecosystem.